sys/external/bsd/compiler_rt/dist/test/Unit/divmodsi4_test.c

   1 //===-- divmodsi4_test.c - Test __divmodsi4 -------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file tests __divmodsi4 for the compiler_rt library.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "int_lib.h"
  15 #include <stdio.h>
  16
  17 // Returns: a / b
  18
  19 extern si_int __divmodsi4(si_int a, si_int b, si_int* rem);
  20
  21
  22 int test__divmodsi4(si_int a, si_int b,
  23                                                 si_int expected_result, si_int expected_rem)
  24 {
  25         si_int rem;
  26     si_int result = __divmodsi4(a, b, &rem);
  27     if (result != expected_result) {
  28         printf("error in __divmodsi4: %d / %d = %d, expected %d\n",
  29                a, b, result, expected_result);
  30                 return 1;
  31         }
  32     if (rem != expected_rem) {
  33         printf("error in __divmodsi4: %d mod %d = %d, expected %d\n",
  34                a, b, rem, expected_rem);
  35                 return 1;
  36         }
  37
  38     return 0;
  39 }
  40
  41
  42 int main()
  43 {
  44     if (test__divmodsi4(0, 1, 0, 0))
  45         return 1;
  46     if (test__divmodsi4(0, -1, 0, 0))
  47         return 1;
  48
  49     if (test__divmodsi4(2, 1, 2, 0))
  50         return 1;
  51     if (test__divmodsi4(2, -1, -2, 0))
  52         return 1;
  53     if (test__divmodsi4(-2, 1, -2, 0))
  54         return 1;
  55     if (test__divmodsi4(-2, -1, 2, 0))
  56         return 1;
  57
  58         if (test__divmodsi4(7, 5, 1, 2))
  59         return 1;
  60         if (test__divmodsi4(-7, 5, -1, -2))
  61         return 1;
  62         if (test__divmodsi4(19, 5, 3, 4))
  63         return 1;
  64         if (test__divmodsi4(19, -5, -3, 4))
  65         return 1;
  66
  67         if (test__divmodsi4(0x80000000, 8, 0xf0000000, 0))
  68         return 1;
  69         if (test__divmodsi4(0x80000007, 8, 0xf0000001, -1))
  70         return 1;
  71
  72     return 0;
  73 }